I'm glad to be able to depricate my own post Groovy++-with-Maven a couple of weeks ago. The Groovy++ team has already taken action and provides the groovvypp libraries in a commonly accessible repository. They also provide a preliminary version of the gmaven plugin that supports statically linked Groovy.
For details see Using-groovypp-with-maven and also the related update Using-groovypp-with-maven (update).
